Dong Zhan Zhang

US Patent:

20060096261, May 11, 2006

Filed:

Dec 13, 2004

Appl. No.:

11/011886

Inventors:

Dong Zhang - Ellicott City MD, US

International Classification:

B01D 46/00

US Classification:

055506000

Abstract:

The assembly consists of a trimming mounting plate receiving a cover and the air filters. The air filters are located between the mounting plate and the cover. The grills of the cover are utilized to hold the air filters and allow the cover to be received by the mounting plate. The mounting plate partitions the returning duct opening into identical areas. The air filter is consists of a frame and a filter media. The air filters cover the identical areas of the duct opening partitioned by the mounting plate. The air filter frame is color, alphabetical and numerical coded to indicate its size. The filter media attached to the filter frame is larger than the frame to create pockets and wrinkles for the pleated effect. The filter media is secured on the face of the frame contacting the mounting plate to create pressure and friction fit. The filter media also limit and filter the otherwise unfiltered airflow around the sides of the most filters on the market.